The Best Episodes Written By Frank Cottrell Boyce

The language of the future is emoji! The Doctor takes Bill to a spectacular city on a distant planet - but where are the colonists? A band of 'cute' droids hold the deadly answer.

One morning in London, and every city and town in the world, the human race wakes up to the most surprising invasion yet: the trees have moved back in. Everywhere, in every land, a forest has grown overnight and taken back the Earth.